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Acquisitions, Discontinued Operations, and Other Dispositions - Consolidated Statements (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Loss from discontinued operations | $ 0.0 | $ 0.0 | $ (16.6)
Balcke Durr | Discontinued Operations, Disposed of by Sale |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Revenues |  |  | 153.4
Costs of products sold |  |  | 144.2
Selling, general and administrative |  |  | 31.4
Special charges (credits), net |  |  | (1.3)
Other expense, net |  |  | (0.2)
Loss before taxes |  |  | (21.1)
Income tax benefit |  | 9.4 | 4.5
Loss from discontinued operations |  | $ (6.8) | (16.6)
Depreciation and amortization |  |  | 2.0
Capital expenditures |  |  | $ 0.7

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